Printing compound of orthonitrophenyl lactoketone.



, UNITED STATES PATENT OFFICE.

Patented October 18, 1904.

SYLVAIN, EIOHHART, OF ST. FONS, NEAR LYoi s, FRANCE, ASSIGNOR TO sooner CHIMIQUE DES USINES DU RHONE, ANCIENNEMENT em LIARD, P. MONNET ET CARTIER TION OF FRANCE.

, OF LYONS, FRANCE, A CORPORA- PRINTING COMPOUND OF ORTHONITROPHENYL LACTOKETONE.

SPECIFICATION forming part of Letters Patent No. 772,560, dated October 18, 1904;.

Application filed. June 16, 1902. Serial No. 111,931. (No specimens.)

. T0 (tZZ whom it may concern:

Be it known that I, SYLvAIN EICHHART, chemist, of the works ofSocit Ohimique des Usines du Rhone, anciennement Gilliard, I. Monnet et Cartier, St. Fons, near Lyons, France, have invented certain new and useful Improved Preparations of O-NitrO-Phenyl- Lacto-Ketone Suitable for Dyeing and Printing, ofwhich the following is a specification.

This invention relates to novel preparations or compositions of o-nitro-phenyl-lactoketone suitable for dyeing and printing. These preparations can be readily .transformed into indigo by the action of alkalies.

It has already been proposed to employ o-nitro-phenyl-lacto-ketone in the printing of textile materials with indigo colors; but up to the present, owing to the insolubility of the product, it has not been possible to employ this ketone in a direct manner. Technical results have only hitherto been obtained with this ketone by using its bisulfite compound, which is soluble inwater. The bisulfite compound is, however, unstable, and the actual yield of indigo obtained by its development on the fiber is very much below the theoretical quantity, so that it is no longer in commerce.

I have now discovered that soluble organic sulfonic and carboxylic acids and the soluble salts or organic sulfonic and carboxylic acids render nitro-phenyl-lacto-ketone easily soluble in water and that the mixture of these products with the ketone require simply to be dissolved in water to be ready for use. For the purposes of this invention the acids menoleic acid, their soluble mineral salts and es ters, Turkeyred oil, (the ammonia salt of ricinoleic sulfonic acid,) and similar bodies. Of the aromatic series the sulfonic acids of benzene, toluene, naphthalene, and naphthol and their soluble salts, as well as the salts of benzoic acid, salicylic acid, and the like, have been found suitable.

Example I: One kilo o-nitro-phenyl-lactomethyl-ketone and three kilos p-tol1'1ene-sulfonate of sodium are mixed. The product keeps well, it is easily soluble in six liters water, and can be employed for printing textiles or otherwise.

In the printing of textile materials the following example illustrates the practical application of my invention; but it will be un- "derstood that it is not confined to the exnine hundred and thirty grams of thickening. The color is then ready for printing.

It will be understood that the above examples are merely typical of the invention, which is in no way limited to the particular solubilizing agent specified nor to the proportions mentioned.

What I claim, and desire to secure by Letters Patent, isv 1. A composition of matter soluble in water and suitable for dyeing and printing, including a mixture of o-nitro-phenyl-lacto-ketone and Turkey-red oil (ammonia salt of ricinoleic sulfonic acid.) I

2. A composition of matter soluble in water and suitable for dyeing and printing, including a mixture of o-nitro-phenyl-lacto-ketone and a soluble sulfonated carboxylic compound. v

3. A composition of matter soluble in water and suitable for dyeing and printing, including a mixture of o-nitro-phenyl-lacto-ketonc and a soluble sulfonic compound.

4. A composition of matter soluble in water and suitable for printing, including a mixture of o-nitro-phenyl-lacto-ketone, a soluble sulfonic compound, and a thickening agent.

5. A composition of matter soluble in water and suitable for dyeing and printing, including a mixture 01 o-nitro-phcnyl-lacto-ketonc 1 and a solublc sulfonic salt.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

SYLVAIN EICHHAR'I. WVitnesses:

TI-Ios. N. BROWNE, MARIN VAoHoN. 

